Chris@102: /*=============================================================================
Chris@102:     Copyright (c) 2001-2014 Joel de Guzman
Chris@102: 
Chris@102:     Distributed under the Boost Software License, Version 1.0. (See accompanying
Chris@102:     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@102: ==============================================================================*/
Chris@102: #if !defined(BOOST_SPIRIT_X3_REAL_APRIL_18_2006_0850AM)
Chris@102: #define BOOST_SPIRIT_X3_REAL_APRIL_18_2006_0850AM
Chris@102: 
Chris@102: #include <boost/spirit/home/x3/core/parser.hpp>
Chris@102: #include <boost/spirit/home/x3/core/skip_over.hpp>
Chris@102: #include <boost/spirit/home/x3/numeric/real_policies.hpp>
Chris@102: #include <boost/spirit/home/x3/support/numeric_utils/extract_real.hpp>
Chris@102: 
Chris@102: namespace boost { namespace spirit { namespace x3
Chris@102: {
Chris@102:     template <typename T, typename RealPolicies = real_policies<T> >
Chris@102:     struct real_parser : parser<real_parser<T, RealPolicies> >
Chris@102:     {
Chris@102:         typedef T attribute_type;
Chris@102:         static bool const has_attribute = true;
Chris@102: 
Chris@102:         real_parser()
Chris@102:         	: policies() {}
Chris@102: 
Chris@102:         real_parser(RealPolicies const& policies)
Chris@102:         	: policies(policies) {}
Chris@102: 
Chris@102:         template <typename Iterator, typename Context>
Chris@102:         bool parse(Iterator& first, Iterator const& last
Chris@102:           , Context& context, unused_type, T& attr_) const
Chris@102:         {
Chris@102:             x3::skip_over(first, last, context);
Chris@102:             return extract_real<T, RealPolicies>::parse(first, last, attr_, policies);
Chris@102:         }
Chris@102: 
Chris@102:         template <typename Iterator, typename Context, typename Attribute>
Chris@102:         bool parse(Iterator& first, Iterator const& last
Chris@102:           , Context& context, unused_type, Attribute& attr_param) const
Chris@102:         {
Chris@102:             // this case is called when Attribute is not T
Chris@102:             T attr_;
Chris@102:             if (parse(first, last, context, unused, attr_))
Chris@102:             {
Chris@102:                 traits::move_to(attr_, attr_param);
Chris@102:                 return true;
Chris@102:             }
Chris@102:             return false;
Chris@102:         }
Chris@102: 
Chris@102:         RealPolicies policies;
Chris@102:     };
Chris@102: 
Chris@102:     typedef real_parser<float> float_type;
Chris@102:     float_type const float_ = {};
Chris@102: 
Chris@102:     typedef real_parser<double> double_type;
Chris@102:     double_type const double_ = {};
Chris@102: 
Chris@102: }}}
Chris@102: 
Chris@102: #endif